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Data Services Tutorial

Tutorial 1 (Data Play - Pandas)

This directory consists of first send of tasks required for Data Services, which are 
Data Ingestion, Manipulation and Visualization

Tutorial 2 (API play - Flask Restplus)

Task 1

The service will download the JSON data for all countries respective to the year 2012 to 2017 and identified by the indicator id given by the user and process the content into an internal data format and store it in the database; use sqlite for storing the data

Curl command: curl -X POST "http://127.0.0.1:5000/collections/?indicator_id=NY.GDP.MKTP.CD" -H "accept: application/json"

Request URL: POST /collections/?indicator_id=NY.GDP.MKTP.CD

Output:

{
  "uri": "/collections/2",
  "id": "2",
  "creation_time": "2020-04-04T16:08:03.323419",
  "indicator_id": "NY.GDP.MKTP.CD"
}

Task 2

This task deletes an existing collection from the database

Curl command: curl -X DELETE "http://127.0.0.1:5000/collections/1" -H "accept: application/json"

Request URL: DELETE /collections/1

Output:

{
  "message": "The collection 1 was removed from the database!",
  "id": "1"
}

Task 3

This task retrieves all available collections. order_by is a comma separated string value to sort the collection based on the given criteria. Each segment of this value indicates how the collection should be sorted, and it consists of two parts (+ or -, and the name of column e.g., id). In each segment, + indicates ascending order, and - indicates descending order.

Curl command: curl -X GET "http://127.0.0.1:5000/collections/?order_by=%2Bid%2C%20-creation_time" -H "accept: application/json"

Request URL: GET http://127.0.0.1:5000/collections/?order_by=%2Bid%2C%20-creation_time

Output:

[
  {
    "uri": "/collections/1",
    "id": 1,
    "creation_time": "1.0.HCount.2.5usd",
    "indicator": "2020-04-04T16:07:50.956829"
  },
  {
    "uri": "/collections/2",
    "id": 2,
    "creation_time": "NY.GDP.MKTP.CD",
    "indicator": "2020-04-04T16:08:03.323419"
  }
]

Task 4

This operation retrieves a collection by its ID . The response of this operation will show the imported content from world bank API for all 6 years.

Curl command: curl -X GET "http://127.0.0.1:5000/collections/1" -H "accept: application/json"

Request URL: GET http://127.0.0.1:5000/collections/1

Output:

{
  "id": 1,
  "indicator": "1.0.HCount.2.5usd",
  "indicator_value": "Poverty Headcount ($2.50 a day)",
  "creation_time": "2020-04-04T16:07:50.956829",
  "entries": [
    {
      "country": "Andean Region",
      "date": "2014",
      "value": 12.0147485733032
    },
    {
      "country": "Andean Region",
      "date": "2013",
      "value": 12.7574424743652
    },
    {
      "country": "Andean Region",
      "date": "2012",
      "value": 14.7959203720093
    },
    {
      "country": "Argentina",
      "date": "2014",
      "value": 5.40922260284424
    }
    ...
  ]
}

Task 5

Retrieve economic indicator value for given country and a year

Curl command: curl -X GET "http://127.0.0.1:5000/collections/2/2016/World" -H "accept: application/json"

Request URL: GET http://127.0.0.1:5000/collections/2/2016/World

Output:

{
  "id": 2,
  "indicator": "NY.GDP.MKTP.CD",
  "country": "World",
  "year": "2016",
  "value": 76163840829219.8
}

Task 6

Retrieve top/bottom economic indicator values for a given year. The example below shows the top 10 indicator values for collection id 2

Curl command: curl -X GET "http://127.0.0.1:5000/collections/1/2012/?q=%2B10" -H "accept: application/json"

Request URL: GET http://127.0.0.1:5000/collections/1/2012/?q=%2B10

Output:

{
  "indicator": "1.0.HCount.2.5usd",
  "indicator_value": "Poverty Headcount ($2.50 a day)",
  "entries": [
    {
      "country": "Honduras",
      "value": 42.4187431335449
    },
    {
      "country": "Central America",
      "value": 24.932918548584
    },
    {
      "country": "Colombia",
      "value": 17.5397624969482
    },
    {
      "country": "Bolivia",
      "value": 17.1273899078369
    },
    {
      "country": "Andean Region",
      "value": 14.7959203720093
    },
    {
      "country": "El Salvador",
      "value": 14.6787967681885
    },
    {
      "country": "Dominican Republic",
      "value": 14.5516204833984
    },
    {
      "country": "Ecuador",
      "value": 12.8523483276367
    },
    {
      "country": "Latin America and the Caribbean",
      "value": 12.1378555297852
    },
    {
      "country": "Paraguay",
      "value": 12.0395565032959
    }
  ]
}

Tutorial 3 (Machine Learning - Regression and Classification)

The dataset used for this tutorial is the IMDB Kaggle sample dataset with the number of training set to be 2100 and the number of test set to be 400.

The code is available at ./Tutorial-3/src/imdb_movies_ml.py

The report for the Tutorial is available at ./Tutorial-3/output/imdb_ml.pdf where a brief explanation of the pipeline is explained.

To run the code:

1. Go to the directory of the python code ./Tutorial-3/src
2. Run the command 
      python imdb_movies_ml.py ../resources/training.csv ../resources/test.csv

The output will be a bunch of CSV files which contains the output of the models and the summary of the metrics. The output is available at ./Tutorial-3/output